test-repo/editors/prettier-atom/menus/prettier-js.json

{
  "context-menu": {
    "atom-text-editor[data-grammar='source js']": [
      {
        "label": "Format With prettier",
        "command": "prettier:format"
      }
    ]
  },
  "menu": [
    {
      "label": "Packages",
      "submenu": [
        {
          "label": "prettier",
          "submenu": [
            {
              "label": "Format",
              "command": "prettier:format"
            }
          ]
        }
      ]
    }
  ]
}